DIGITAL ELECTRONICS

 weighted code

 alphanumeric code

 self-complementing code

 non-weighted code

 self-complementing code

 weighted code

 alphanumeric code

 non-weighted code

 non-weighted and non-self-complementing code

 non-weighted self-complementing code

 weighted non-self-complementing code

 weighted self-complementing code

 7 data bits

 4 data bits

 no data bits

 3 data bits

 numeric codes

 alphanumeric codes

 error correcting codes

 BCD codes